var $ = function(id) {
    return document.getElementById(id);
};

var alert = function(zhi,exe) {
reval  = "";
reval += "<style type=\"text/css\"> ";
reval += "#alerts {";
reval += "	font-size:12px;";
reval += "	width:333px;";
reval += "	z-index:auto;";
reval += "	border:1px solid #B2B4BF;";
reval += "	position:absolute;    ";
reval += "	top:50%;    ";
reval += "	left:50%;    ";
reval += "	margin:-100px 0 0 -160px; ";
reval += "}";
reval += "#alerts #top {";
reval += "	height:10px;";
reval += "	padding:8px;";
reval += "	background-color:#3B7DC7;";
reval += "	font-weight:bolder;";
reval += "	color:#FFFFFF;";
reval += "}";
reval += "#alerts #down { background-color:#EAEFF5; padding:5px; text-align:left; }";
reval += "#alerts #button {";
reval += "	clear:both;";
reval += "	height:20px;";
reval += "	background-color:#EAEFF5;";
reval += "	padding-bottom:10px;";
reval += "	color:#000000;";
reval += "}";
reval += "body {";
reval += "	margin-left:0px;";
reval += "	margin-top:0px;";
reval += "	margin-right:0px;";
reval += "	margin-bottom:0px;";
reval += "}";
reval += "</style>";
reval += "<div id=\"alerts\" align=\"center\">";
reval += " <div id=\"top\"> 信 息 提 示 </div>";
reval += " <div id=\"down\"> "+zhi+" </div>";
reval += " <div id=\"button\">";
reval += " <input type=\"submit\" name=\"Submit\" value=\"确定\" onclick=\""+exe+"re($('alerts'));\" style=\"background:url(alert.gif);border:0px; width:48px; height:20px;\" />";
reval += " </div>";
reval += "</div>";
    document.write(reval);
    timer = window.setInterval("re($('alerts'))", 7000);
    timer = window.setInterval(exe, 7000);
}

var re = function(zhi) {
    document.body.removeChild(zhi);
    clearInterval(timer);
}